Rothney Astrophysical Observatory
Expanding our knowledge of the universe.
Public events
Experience the Rothney Astrophysical at our year round public events. We only open to the public once a month for our public events.
School programming
Book your class in for a day or evening of experiential learning opportunity at a working science facility.
Dark skies
Learn how we are working on preserving the wilderness of the night sky in and around Calgary.

Where to find us
Rothney Astrophysical Observatory
Address
210 Avenue W, Hwy 22 S
Foothills No. 31, AB T0L 1W0
Phone
(403) 931-2366
GPS coordinates
Lat 50.868039 deg N, Long 114.291142 deg W
Directions
The Rothney Astrophysical Observatory (RAO) is located near Priddis, Alberta, about 30 kilometres southwest of the Calgary city centre. It is less than an hour drive from the University of Calgary.
- Take Macleod Trail south.
- Go west on Highway 22X, towards the mountains.
- Continue past Spruce Meadows, past 37 Street, 69 Street and 83 Street to a major intersection where Highway 22X meets Highway 22 (this intersection is illuminated after dark).
- Turn left toward Millarville (heading south).
- About 1.2 kilometres south along Highway 22, look for the RAO sign on the west side of the highway. Then in 10 metres, look to the east side of the highway for the large RAO sign and gate. Drive through the gate and follow the gravel road up the hill to the parking area.